body {
    margin: 0;
    padding: 0;
}

.contents {
    background: #ffffff url(../images/bg.png) no-repeat scroll top center;
    background-size: 100%;
    min-height: 500px;
}

.header {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 0;
    display: flex;
    flex-direction: inherit;
}

.header img {
    width: 200px;
}

.header .menu {
    padding-left: 40px;
    display: flex;
    flex-direction: inherit;
}
.header .loginBtn{
    width: 80px;
    height: 40px;
    text-align: center;
    line-height: 40px;
    float: right;
    color: #fff;
    background-color: #007bff;
    border-color: #007bff;
}
.header .menu a {
    text-decoration: none;
    color: #000;
    padding: 15px;
    font-size: 18px;
}